When carbondioxide is bubbled into limewater a white precipitate is formed. If t...
Question
When carbondioxide is bubbled into limewater a white precipitate is formed. If the passage of the gas is continued, the precipitate disappears. The reason for this isOptions
A)
calcium carbonate is formed which on reaction dissolves
B)
calcium hydrogen carbonate is precipitated and then dissolves
C)
calcium carbonate is formed which on reaction with further carbondioxide forms solube calcium hydrogen carbonate
D)
concentration of the solution has occurred with the deposition of calcium hydroxide
E)
the solution has become saturated and solid carbondioxide has been deposited
Related Lesson: Occurrence, Preparation, and Properties of Carbonates | Metals, Metalloids, and Nonmetals
The correct answer is C.
More Past Questions:
Discussion (2)
Other Subjects
- English Language
- Biology
- Government
- Mathematics
- Physics
- Economics
- Christian Religious Knowledge
- Commerce
- Geography
- Literature In English
- Accounts
- Agricultural Science
- General Paper
- History
- Islamic Religious Knowledge
- Further Mathematics
- Current Affairs
- Computer Studies
- Civic Education
- Math
- Reading
- Writing and Language
- Home Economics
- French
- Igbo
- Hausa
- Yoruba
- Fine Arts
- Basic Accounting
100%
When carbondioxide is bubbled into limewater a white precipitate is formed. If the passage of the gas is continued, the precipitate disappears. The reason for this is calcium carbonate is formed which on reaction with further carbondioxide forms solube calcium hydrogen carbonate.
When excess of carbon dioxide gas is passed through lime water then the white precipitate calcium carbonate formed first dissolves due to the formation of a soluble salt calcium hydrogen carbonate (Ca(HCO3)2, and the Solution becomes clear again.